Automatically set all permissions in bucket.

set_permissions.rb

#!/usr/bin/ruby
# usage: set_permissions.rb [access_key_id] [secret_access_key] [bucket_name]

# -----------------------------------------------------------------------------
# This script provides a means of updating all of the files in an S3 bucket to
# have the correct permissions. As this script is effectively throwaway it 
# doesn't do much beyond making sure it runs at least once, however, is worth
# keeping around as a reference in the event the problem arises again.
# -----------------------------------------------------------------------------
require 'rubygems'
require 'aws-sdk'

# Note the configuration points
AWS.config({
  :access_key_id => ARGV[0],
  :secret_access_key => ARGV[1],
})
bucket_name = ARGV[2]

# Get the bucket information
s3 = AWS::S3.new
bucket = s3.buckets[bucket_name]

# Update the ACL for each item in the bucket
bucket.objects.each do|obj| 
	puts obj.key
	obj.acl = :public_read 

end